Recommended workflow
- Paste the PEM certificate chain in server, intermediate, and optional root order.
- Run the check to inspect issuer-subject links and signatures.
- Fix the chain order if the tool reports a break or missing intermediate.
SSL / TLS
Certificate Chain Checker
Paste a full chain to check leaf/intermediate/root order, issuer-subject links, and certificate signatures.
Privacy note
Sensitive input is processed only for the current request and is not stored by this tool.
Privacy
The certificate chain is processed only for this request. After submit, the chain content is not placed back into the form.
What is Certificate Chain Checker for?
Certificate Chain Checker reviews a fullchain before server installation, especially to confirm intermediate certificate order and valid issuer-subject links.
How this tool works
SSL/TLS tools parse certificate, CSR, key, or live handshake data with OpenSSL-compatible logic. They surface subject, issuer, SAN, validity, chain, format, and key-matching details so deployment issues are easier to isolate.
Part of this tool group
Open nearby tools in the same group to cross-check, inspect deeper, or complete a small workflow.
Open SSL / TLS hubFrequently asked questions
Can wrong fullchain order break HTTPS?
Yes. Some clients may fail to build trust if intermediates are missing or the chain is ordered incorrectly.
